The proper handling of commonly used chemicals in bioprocessing is critical to maintaining a safe working environment as well as operational efficiency. Chemical mishandling can lead to failed batch processes, quality issues, as well as lost time and resources. As new technologies designed to help mitigate these safety risks become available, biomanufacturers have more opportunities to ensure that their production environments are safe. As a raw materials supplier, MilliporeSigma believes suppliers can play a critical role in terms of providing product and packaging solutions designed to minimize chemical handling risks…
BioProcessing Journal Posts
Constant volume diafiltration (CVD) is commonly used in the biopharmaceutical industry for impurity removal or buffer exchange. The number of diavolumes is usually determined empirically or by theoretical analysis to achieve the target degree of impurity removal. There is, however, a lack of conclusive information about the effect of contaminant removal in variable volume diafiltration (VVD). VVD can occur when the diafiltration control mode is not functioning as intended. In this study, a mathematical model has been proposed to predict removal efficiency during VVD. Experiments were performed to compare the results to model calculations. A dilute concentration of bovine serum albumin solution was used as the feed solution to study variable volume effects.
Intranasal low sialic acid erythropoietin (Neuro-EPO) is a non-hematopoietic molecule that shows neuro-protective activity in some rodent models of brain ischemia. The protein formulations are susceptible to a loss of stability due to formulation, processing, and storage. The aim of this study was to perform formulation analyses of Neuro-EPO to achieve acceptable stability. Experiments were done to assess the compatibility of Neuro-EPO with selected excipients: benzalkonium chloride (BAC) preservative, sodium chloride (NaCl), and hydroxypropyl methylcellulose (HPM) K4M polymer.
The development and manufacturing of advanced breakthrough cell therapies presents a wide variety of complex challenges that include:
• delivering the medical science, from research all the way through product development and clinical testing, to the patient population;
• understanding and defining the product’s modes of activity and the cell’s attributes necessary to attain therapeutic benefit and safety;
• overcoming significant manufacturing, logistical, and cost of goods issues associated with using attachment-dependent bioreactor systems; and
• defining product release challenges associated with rapidly delivering an effective product to the patients.
The treatment of animal serum by gamma irradiation, for the purpose of mitigating the risk of introducing a pathogen (virus, mollicute, or other microbe) into a cell culture, is a process that has been executed (and perhaps understood) primarily by irradiation contractors utilized by serum manufacturers. The selection of appropriate exposure conditions and irradiation doses is driven by a number of critical factors including: (1) the validation and control of the irradiation process itself; (2) the efficacy of the applied irradiation dose range for inactivating pathogens of interest; (3) determination and control of critical process attributes; (4) the potential impacts of these irradiation dose levels on the serum being irradiated; and finally, (5) the potential impact of irradiated serum on the medicinal product and the associated manufacturing process where serum is ultimately used. In order to increase awareness of these topics throughout the cell culture community, we have addressed these critical factors in the current review…
Biologics Biologics Production Bioreactor Scale-Up Cell & Gene Therapy Cell Lines Fed-Batch Bioreactor Process HEK293 Mammalian Cell Culture Manufacturing Regulatory Viral Reference Materials Viral Vectors
abatoir albumin animal serum animal-derived materials antibody biomedical research blood-derived products calf serum calicivirus cell culture cell medium challenge virus design of efficacy dose mapping fbs fetal bovine serum gamma irradiation heat inactivation isia kgy kilogray microbes mollicute nbcs pathogen reduction product management risk mitigation serum product serum risks spiked serum therapeutic proteins traceability viral reduction whole blood
This article serves as an introduction to a series of papers that are being authored under the sponsorship of the International Serum Industry Association with the purpose of establishing best practices for processes employed in the gamma irradiation of animal serum. It is comprised of a discussion about the role of serum in cell culture and the management of the associated risks. Additional articles in the series will address a number of topics of interest to the cell culture community, including, but not limited to: (1) performance of absorbed dose mapping for irradiators; (2) validation of the efficacy of pathogen reduction during gamma irradiation of animal serum; (3) comparability evaluation of irradiated serum; (4) product management throughout the irradiation process; and (5) ensuring a quality outcome when using gamma irradiation. The intent of the series is to increase awareness of the scientific community regarding the conduct of gamma irradiation and the strengths and limitations of this serum treatment approach for achieving the goals of adventitious agent risk mitigation.
Biologics Biologics Production Bioreactor Scale-Up Cell & Gene Therapy Cell Lines Fed-Batch Bioreactor Process HEK293 Mammalian Cell Culture Manufacturing Regulatory Viral Reference Materials Viral Vectors
abatoir albumin animal serum animal-derived materials biomedical research blood-derived products calf serum cell culture cell medium dose mapping fbs fetal bovine serum gamma irradiation heat inactivation isia nbcs pathogen reduction product management risk mitigation serum risks therapeutic proteins traceability whole blood
Acetyl-4, 4′-diapolycopene-4, 4′-dioate, a C30 carotenoid and secondary metabolite, was produced by the Sporosarcina aquimarina bacteria using a 5.0 L fermentation vessel with a 3.0 L working volume. In the presence of tryptone, the biosynthesis of acetyl-4, 4′-diapolycopene-4, 4′-dioate production using a batch fermentation process was further improved. Production parameters like carbon source, pH, and temperature were studied, and maximum product was achieved, up to 1.2 g/L, where the secondary metabolite yield was 0.07 g/L and productivity, 0.00833 g/L/h. The organic constitution and significant red color intensity of the acetyl-4, 4′-diapolycopene-4, 4′-dioate molecule can be used in the textile industry as a dye, and a coloring additive in processed foods and pharmaceuticals.
Numerous standardized techniques for detection and quantification of proteins are based on polyclonal antibody (pAb) use. However, because pAbs are a heterogeneous mixture of antibodies, there is the possibility of non-specific interactions or cross-reactions with non-related proteins, which is a disadvantage in the detection and quantification of target proteins. Therefore, the main objective of this study was to generate and characterize monoclonal antibodies (mAbs) for quantifying the Vip3Aa20 protein of Bacillus thuringiensis (Bt) expressed in event MIR162 transgenic corn plant.
Over the last few years, the challenges of vaccine development have created perhaps an unprecedented level of scrutiny, not just within the biotech industry, but also in the consciousness of the general public. This was certainly the case during the recent H1N1 influenza outbreak. The demand to know when a vaccine would be available, and if producers could meet the global demands consistently made front page news. The challenge of rapid and scalable manufacture is of course nothing new in biopharmaceutical development and in many respects, monoclonal antibodies are leading the way as the industry moves towards the required level of industrialization.
An interesting situation occurred ten years ago in an industry where quality had been the critical factor in management decision-making. Quality was abruptly bumped to second place behind pricing, which started a global rush to find lower-cost suppliers and eventually resulted in massive outsourcing. During this evolution, the importance of quality systems for the pharmaceutical and biopharmaceutical community was recognized by regulatory agencies that began establishing risk management standards.